Novice, (an appropriate nom de guerre for you), as busdriver007 says, you get what you negotiate. That's why QANTAS pilots are on a better deal.
You cite Air Asia. Why don't you ask your dentist why he earns more in Australia than his counterpart in Asia? Or your electrician? What's your job? I bet you earn more than your oppo in Thailand or Uganda or Venezuela.
Why do you even care?